WO2014142189A1 - 繊維強化プラスティック板と金属板との複合構造体およびその製造方法 - Google Patents
繊維強化プラスティック板と金属板との複合構造体およびその製造方法 Download PDFInfo
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- WO2014142189A1 WO2014142189A1 PCT/JP2014/056542 JP2014056542W WO2014142189A1 WO 2014142189 A1 WO2014142189 A1 WO 2014142189A1 JP 2014056542 W JP2014056542 W JP 2014056542W WO 2014142189 A1 WO2014142189 A1 WO 2014142189A1
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- WIPO (PCT)
- Prior art keywords
- prepreg
- composite structure
- patch member
- metal plate
- molds
- Prior art date
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- 239000002184 metal Substances 0.000 title claims abstract description 84
- 239000002131 composite material Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 57
- 229920002430 Fibre-reinforced plastic Polymers 0.000 title claims abstract description 38
- 239000011151 fibre-reinforced plastic Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 239000012783 reinforcing fiber Substances 0.000 claims description 5
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 abstract 1
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- 238000000605 extraction Methods 0.000 description 10
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- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Definitions
- the present invention is based on Japanese Patent Application: Japanese Patent Application No. 2013-050924 (filed on March 13, 2013), and the entire contents of the application are incorporated herein by reference.
- the present invention relates to a composite structure of a fiber reinforced plastic plate and a metal plate and a method of manufacturing the same.
- the present invention has been made in view of the circumstances and the like exemplified above.
- a method of producing a composite structure of a fiber reinforced plastic plate and a metal plate is characterized by having the following steps: (1) the above-described predetermined shape Prepare a pair of molds to obtain a composite structure. (2) The metal plate having an opening formed of a through hole penetrating in the thickness direction is prepared. (3) A patch member made of plastic (for example, fiber reinforced plastic) having a size larger than the opening is set to one of the pair of molds. (4) The prepreg and the metal plate are disposed between a pair of the molds such that the metal plate is positioned between the prepreg for forming the fiber reinforced plastic plate and the patch member.
- the composite structure molded into the predetermined shape is obtained by closing the pair of molds and joining the prepreg, the metal plate, and the patch member. At this time, a pressing force is selectively applied to a position corresponding to the inside of the opening by a pressing member provided on the other of the pair of molds, and the prepreg is inserted through the opening. And the patch member.
- a method of producing a composite structure of fiber reinforced plastic plate and metal plate comprises the following steps: (A) A metal plate having a through hole penetrating in the thickness direction, a prepreg for forming a fiber reinforced plastic plate, and a pair of molds for obtaining a composite structure having a predetermined shape Prepare a mold capable of forming a recess larger in diameter than the one side opening at a position facing the one side opening, and at least one patch member set at a position facing the through hole; (B) arranging the prepreg and the metal plate between the pair of molds; (C) close the pair of molds, and at the time of this close, (Ca) The prepreg and the metal plate are formed into the predetermined shape while the prepreg and the metal plate are in contact with each other.
- a composite structure of fiber reinforced plastic plate and metal plate has the following elements: A metal plate having a through hole which is open on one side and the other side through in the thickness direction; A fiber reinforced plastic plate joined to the one surface of the metal plate; Plastic shaft formed in the through hole of the metal plate and integrated with the fiber reinforced plastic plate; A plastic head (locking portion) which is formed larger in diameter than the opening of the through hole on the other surface side of the metal plate and is locked to the metal plate and integrated with the shaft portion.
- the forming of the fiber-reinforced plastic plate corresponding to the predetermined shape, and the formation of the composite structure having the predetermined shape by joining the formed object and the metal plate by the forming are a pair of It is done at once by closing the molds together.
- the bonding between the fiber reinforced plastic plate and the metal plate is performed by bonding the fiber reinforced plastic plate (the prepreg) and the patch member through the opening provided in the metal plate. It will be. Therefore, the manufacturing cost of the composite structure can be favorably reduced.
- the patch member is larger in size than the opening. Therefore, good bonding strength in the composite structure can be obtained.
- the fiber reinforced plastic plate (prepreg) joined to one surface of the metal plate, the shaft portion formed in the through hole of the metal plate, and the other surface side of the metal plate
- the fiber reinforced plastic plate is strongly mechanically bonded to the metal plate, so that the impact resistance of the composite structure is improved.
- Form 2 A recess for accommodating the patch member is formed in the one of the pair of molds, and the recess is provided so as to open in a direction for extracting the composite structure after molding.
- Aspect 3 The recess is formed by the step provided on the inner surface along the relative movement direction of the pair of molds.
- Embodiment 4 The fiber reinforced plastic plate is bonded to one side of the metal plate.
- Form 5 The fiber reinforced plastic board contains continuous reinforcing fibers.
- a prepreg as the prepreg, a prepreg is provided which has a thick portion at a portion facing the through hole. The thick portion is pushed into the through hole and is coupled to the patch member set in the pair of molds.
- Aspect 7 The patch member is set to the prepreg instead of the pair of molds.
- Aspect 8 A shaft integrated with the prepreg is formed in the through hole, and a head or a locking part integrated with the shaft in the recess is larger than the diameter of the opening. It is formed.
- the patch member is accommodated in the recess. For this reason, the setting of the patch member can be performed well. Further, the concave portion is opened in a direction for extracting the composite structure after molding. For this reason, the extraction operation of the composite structure after molding can be performed well.
- the setting operation of the patch member and the extraction operation of the composite structure after molding are good. Can be done.
- the manufacturing cost and the bonding strength are higher than those of the conventional manufacturing method. It can be improved well.
- bonding between the metal plate and the fiber-reinforced plastic plate containing continuous reinforcing fibers can be performed at low cost and with good bonding strength.
- the thick part of the prepreg functions as the second patch member.
- the mold shape can be simply formed.
- the mechanical bond between the prepreg and the metal plate is strengthened.
- Form 9 See the second viewpoint above.
- Form 10 in the step (a), the patch member is set in the recess, and in the step (c), the prepreg in the through hole is formed by or in conjunction with closing of the pair of molds. Is pushed out and coupled with the patch member in the recess to form the shaft and the head.
- Form 11 in the step (a), the patch member is set on the prepreg, and in the step (c), the inside of the through hole and the interlocking with the closing of the pair of metal molds are further performed. The patch member is pushed into the recess to form the shank and the head.
- Form 12 in the step (a), as the patch member, a first patch member is set on the prepreg, a second patch member is set in the recess, and in the step (c), the pair The first patch member is pushed out and coupled with the second patch member in the through hole by or in conjunction with the closing of the die of the above, and the shaft portion and the head portion are formed. .
- the patch member may be a mold or a prepreg, or a mold and a prepreg, in consideration of the desired shape of the composite structure, the flowability of the prepreg or patch member, or the manufacturing cost of the mold. Set to both.
- a recess for accommodating the patch member may be provided between the molds, in particular, between the metal plate and one of the molds.
- the patch member may be attached on the prepreg, or the number of laminated prepregs may be locally increased to locally thicken the prepreg. The thick portion thus formed also functions as a patch member.
- the patch member may further be set on a metal plate.
- the selective pressing of the patch member or the thick part of the prepreg can also be performed by clamping a pair of molds, but the plunger mechanism is attached to the mold or the stepped shape is applied to the mold in the one contacting the prepreg.
- a convex portion may be added.
- the patch member can be set to face one opening, the other opening, or both openings of the through hole formed in the metal plate.
- a counterbore may be formed in one side opening (opening edge) of the through hole formed in the metal plate, and the patch member may be locked to the counterbore and / or the counterbore may be made of plastic You may utilize as a fitting part of a head.
- the recess formed by the mold can be formed by one mold, in particular, by a mold on the metal plate side, or by a pair of molds, and may be formed using a metal plate.
- the recess can be formed by the stepped shape formed on one of the molds and the other surface of the metal plate.
- Chemical bonding between one surface of the prepreg (fiber reinforced plastic plate portion) and one surface of the metal plate is performed using a resin contained in the prepreg and / or using a separately applied adhesive. Or can be realized by heat treatment.
- the plastic shank and head may contain fibers.
- FIG. 1 (a) is a plan view of a composite structure 10 manufactured by the manufacturing method of the present embodiment
- FIG. 1 (b) is a cross-sectional view taken along the line AA.
- the composite structure 10 is a center pillar member of an automobile, and is a carbon fiber reinforced plastic containing a main body portion 11 made of a high tensile steel plate which is a metal plate and continuous carbon fibers (long fibers) And a reinforcing member 12 made of a CFRP) plate.
- CFRP CFRP
- a plurality of openings 13 formed of circular through holes are formed in the longitudinal direction central portion of the main body 11 and in the region to which the reinforcing member 12 is joined.
- the opening 13 is provided to penetrate in the thickness direction of the main body 11.
- a patch member 14 is provided to face the reinforcing member 12 across the opening 13.
- the patch member 14 is a substantially disc-shaped member made of a short fiber CFRP material made of the same matrix resin as that of the reinforcing member 12, and is formed with an outer diameter larger than the inner diameter of the opening 13.
- the reinforcing member 12 and the patch member 14 are firmly bonded to each other by the mutual fusion of the matrix resin inside the opening 13.
- the bottom of the main body 11 in FIG. 1B is referred to as the “bottom 15”, and the sloped portion adjacent to the bottom 15 is referred to as the “side 16”.
- the joint portion between the reinforcing member 12 and the patch member 14 (that is, the opening 13 shown in FIG. 1 (b)) is formed on the bottom portion 15 and the side portion 16. They are arranged along the longitudinal direction of the composite structure 10 in a staggered arrangement.
- the side surface portion 16 is formed with a plurality of stepped shapes 17.
- the joint portion between the reinforcing member 12 and the patch member 14 is provided so as to be arranged along the stepped shape 17.
- the prepreg 18 shown in FIG. 4 is a CFRP plate for forming the reinforcing member 12.
- the heater 21 and the cooler 22 are embedded in the fixed mold 20.
- the heater 21 and the cooler 22 are disposed along the inner surface of the female mold forming portion 23 which is a hat-shaped space in a cross sectional view for forming a molding cavity, and the female mold 20 is appropriately selected according to the process conditions. It is provided so that it can be heated and cooled.
- the female mold forming portion 23 is a space which is surrounded by the female mold bottom surface 24 corresponding to the bottom surface portion 15 of the composite structure 10 and the female mold side surface 25 corresponding to the side surface portion 16 and opens upward in the drawing. .
- the female mold bottom surface 24 is provided so as to be substantially orthogonal to the direction (upper side in FIG. 4: hereinafter referred to as “extraction direction”) in which the composite structure 10 after molding is extracted.
- the female mold bottom surface 24 is provided with a bottom surface side concave portion 26 which is a concave portion for housing (setting) the patch member 14.
- the bottom side recess 26 is formed to open in the extraction direction described above.
- the female mold side surface 25 is provided along the extraction direction.
- a plurality of stepped shape corresponding portions 27 are provided at positions of the female side surface 25 corresponding to the stepped shapes 17 in the main body portion 11.
- the stepped shape corresponding portion 27 is a step portion formed in a shape corresponding to the above-described stepped shape 17.
- a side surface side concave portion 28 which is a concave portion for housing the patch member 14 is provided.
- the side concave portion 28 is a U-shaped groove formed from the stepped shape corresponding portion 27 toward the female bottom surface 24 side (lower side in the figure), and as shown in FIG. It is formed in a step-like shape that opens in the extraction direction in visual view.
- the movable mold 30 is provided above the female mold 20 so as to be vertically movable in the figure (the movement direction of the male mold 30 corresponds to the “relative movement direction” of the present invention: This relative movement direction is parallel to the above-mentioned "extraction direction”.
- the heater 31 and the cooler 32 are embedded in the male die 30 as well.
- the male mold 30 has a male mold forming portion 33 which is a projecting portion having a shape corresponding to the female mold forming portion 23.
- Bottom side convex part 34 is provided in a position corresponding to bottom side concave part 26 at the time of closed type in male mold formation part 33.
- the bottom side convex portion 34 is a substantially cylindrical member, and is formed to have a diameter smaller than the diameter of the opening 13.
- a plurality of stepped shape corresponding portions 36 are provided on the male side surface 35 which is a surface corresponding to the female side surface 25 when the mold is closed.
- the stepped shape corresponding portion 36 is a step portion formed in a shape corresponding to the above-described stepped shape 17 and provided at a position corresponding to the stepped shape corresponding portion 27 of the female die 20 when the mold is closed. There is. That is, in the closed mold, the stepped shape 17 is accommodated in the gap formed between the stepped shape corresponding portion 27 of the female die 20 and the stepped shape corresponding portion 36 of the male die 30.
- the shape corresponding portion 36 is formed.
- the male die 30 also includes a plunger 37, a cam 38, and a cylinder 39.
- the plunger 37 is a cylindrical member formed to have a diameter smaller than the opening diameter of the opening 13 similarly to the bottom side convex portion 34, and is provided at a position corresponding to the opening 13 when the mold is closed. The distal end of the plunger 37 is moved in and out by advancing and retracting in accordance with the operation of the cam 38 and the cylinder 39 that drives the cam 38.
- the female mold 20 and the male mold 30 are formed between the prepreg 18 and the main body 11 in a hat shape in advance as described above in a cross-sectional view and the opening 13 and the stepped shape 17 After setting the patch member 14 and the patch member 14 so as to form the composite structure 10 having the predetermined shape as described above, while forming the prepreg 18 into the above-described reinforcing member 12 by closing the mold. It is configured.
- a method for manufacturing the composite structure 10 shown in FIGS. 1 to 3 will be described below using the female mold 20 and the male mold 30 shown in FIG.
- the heater 21 and the cooler 22 provided in the female die 20 and the heater 31 and the cooler 32 provided in the male die 30 have thermosetting properties as to whether the matrix resin in the patch member 14 and the prepreg 18 is thermoplastic.
- the operation is appropriately controlled depending on whether it is or not, but since it is not a main part of the present invention and is also within the range of the well-known technology, these operation descriptions will be omitted for simplification of the description.
- a female mold 20 and a male mold 30 as shown in FIG. 4 are prepared. Also, the main body 11 in which the opening 13 is formed as described above is prepared. Furthermore, the patch member 14 is set in the bottom surface side recess 26 and the side surface side recess 28 in the female die 20. Then, the prepreg 18 and the main body 11 are disposed between the female mold 20 and the male mold 30 so that the main body 11 is positioned between the prepreg 18 and the patch member 14.
- the female mold 20 and the male mold 30 are closed.
- the reinforcing member 12 is formed by forming the prepreg 18 into the hat shape as described above.
- the plunger 37 has not been projected yet, as shown in (b) of FIG. 5, in the side surface portion 16, the prepreg 18 (reinforcement member 12) and the patch member 14 are joined. Has not been done.
- the bottom side convex portion 34 selectively joins the inside of the opening 13 from the prepreg 18 side. A pressing force is applied.
- the pressing force for bonding is selectively applied to a position (area) corresponding to the inside of the opening 13 in the laminate of the prepreg 18, the main body 11 and the patch member 14.
- the prepreg 18 (reinforcement member 12) and the patch member 14 are coupled to each other through the opening 13.
- the plunger 37 is protruded in the closed state.
- the plunger 37 selectively joins the side surface portion 16 to the region corresponding to the inside of the opening 13 in the above-described laminate by the plunger 37.
- Pressure is applied.
- the prepreg 18 (reinforcement member 12) and the patch member 14 are coupled via the opening 13.
- the composite structure 10 formed by joining the reinforcing member 12, the main body portion 11 and the patch member 14 is formed.
- the plunger 37 retracts in the closed state.
- the female mold 20 and the male mold 30 are opened, and the molded composite structure 10 is extracted.
- the bottom-side recess 26 is formed by a recess that opens in the extraction direction.
- the side recess 28 is formed by a step provided on the female side surface 25 which is the inner surface of the female die 20 along the extraction direction. ing. That is, the bottom side recess 26 and the side recess 28 both open in the extraction direction. Therefore, the set of patch members 14 and the removal of the composite structure 10 after molding are easily performed.
- the molding from the prepreg 18 to the reinforcing member 12 and the joining of the reinforcing member 12 and the main body 11 are performed in one cycle by the female die 20 and the male die 30.
- the closed-open type makes it easy to carry out at one time.
- the reinforcing member 12 and the patch member 14 are coupled to each other through the opening 13.
- the patch member 14 is formed to have a size (outer diameter) larger than that of the opening 13. For this reason, the hooked structure by the outer edge portion of the patch member 14 forms a locking portion for suppressing the peeling between the main body portion 11 and the reinforcing member 12 after bonding.
- the patch member 14 may be the same continuous fiber CFRP as the reinforcing member 12.
- the patch member 14 may be made only of a synthetic resin that is the same as or similar to the matrix resin in the reinforcing member 12 (i.e., one not containing reinforcing fibers).
- the planar shape of the patch member 14 is not limited to a substantially circular shape, and may be a substantially regular polygonal shape or an elliptical shape.
- the plurality of adjacent patch members 14 may be integrated with each other by being connected by a rod-like member.
- the presence or absence of the opening 13 is provided between the main body 11 and the prepreg 18 by the application of the “selective” bonding pressing force to the region corresponding to the inside of the opening 13.
- the bond between the prepreg 18 (reinforcement member 12) and the patch member 14 through the opening 13 becomes strong.
- the whole of the bottom side convex part 34 and the plunger 37 may not be formed smaller than the diameter of the opening 13. That is, at least the tip end portion of the bottom side convex portion 34 or the plunger 37 may be formed smaller in diameter than the opening diameter of the opening portion 13.
- the plunger 37 may be hydraulic.
- the placement of the main body portion 11 and the prepreg 18 between the female die 20 and the male die 30 may be performed prior to the setting of the patch member 14.
- the application object of the present invention is not limited to the center pillar member of a car.
- the present invention is directed to automobile body parts (especially parts made of a joint of a high tensile steel sheet (including a so-called die quench method) and a fiber reinforced plastic) which is required to have a high strength as well as a light weight. Therefore, it is very preferably applied.
- the shape and structure of the composite structure 10 are not particularly limited. Depending on the shape of the composite structure 10, instead of the plunger 37, a convex similar to the bottom convex 34 may be used.
- a pressing member such as a plunger may be provided on the female die 20 (depending on the shape of the composite structure 10) or may be provided on both the female die 20 and the male die 30.
- the fiber reinforced plastic board used in the present invention is not limited to a continuous fiber (long fiber) FRP board. That is, the present invention can be suitably applied also to a short fiber FRP board. However, the present invention is particularly suitable for bonding a fiber reinforced plastic plate made of continuous fibers and a metal plate. Further, the reinforcing member 12 and the patch member 14 may be the same material or different materials. Furthermore, the present invention can be suitably applied to a structure in which an adhesive layer is provided between the main body portion 11 and the reinforcing member 12.
- the metal plate used in the present invention is also not limited to a steel plate.
- Manufacturing method 2 will be described as one of the embodiments with reference to FIG.
- the description of the manufacturing method 1 regarding the common points with the manufacturing method 1, the description of the manufacturing method 1 can be appropriately referred to.
- the present production method 2 has the following steps.
- step (i) in FIG. 9, step (ii) in FIG. 9 for the molds 71 and 72 A metal plate 41 having a through hole 42 penetrating in the thickness direction is prepared. A plurality of through holes 42 are formed dispersed in the metal plate 41 according to the desired bonding strength and impact resistance.
- a prepreg 51 for preparing a fiber-reinforced plastic board is prepared.
- a patch member 61 is attached to a portion facing the through hole 42, and a thick portion 54 is formed.
- the thick portion 54 is formed by locally increasing the number of laminated layers of the prepreg 51.
- the portion to be protruded from the through hole 42 is formed thick.
- a pair of molds 71 and 72 for preparing the composite structure having a predetermined shape is prepared.
- the pair of molds 71 and 72 can form the recess 73 at a position facing the one side opening 42 a of the through hole 42.
- the one side opening 42 a is an opening on the side of the female die 71 that holds the metal plate 41.
- the recess 73 is larger in diameter than the opening diameter of the one side opening 42 a on the boundary surface with at least the one side opening 42 a.
- Recesses 73 disposed on the side portions of the molds 71 and 72 are formed by the stepped shapes 71a and 72a of the female die 71 and the male die 72, and further by the metal plate 41 held between both stepped shapes 71a and 72a. It is done.
- the recess 73 disposed at the bottom of the molds 71 and 72 is formed on the female mold 71.
- the molds 71 and 72 are closed together. Specifically, the male mold 72 is pressed into the female mold 71, and the prepreg 51 and the metal plate 41 are formed into a predetermined shape while being in contact or bonded.
- the patch member 61 (thick portion 54) is pressed between the stepped shapes 71a and 72a, pushed into the through hole 42, and further pushed out into the recess 73 from the one side opening 42a.
- the reinforcing fiber plastic shaft 52 and the head (locking portion, collar) 53 integrated with the prepreg 51 (plate portion, main body) are formed.
- the head portion 53 is formed larger in diameter than the opening diameter of the one side opening 42 a, and is locked on one surface of the metal plate 41.
- the outer surface of the head 53 is molded along the shape of the female die 71.
- the molds 71 and 72 may be provided with a heater or a cooler to plastically deform or cure the prepreg 51 or the patch member 61. Heating or cooling treatment is performed.
- the patch member 61 (thick portion 54) is set on the side of the other opening 42 b of the through hole 42, that is, on the prepreg 51.
- the patch member 14 is set on the side of the one side opening 42 a of the through hole 42, that is, on the side of the metal plate 41 to the female die 71.
- the patch members 14 are set on both sides of the through hole 42.
- Manufacturing method 3 will be described as one of the embodiments with reference to FIG.
- the description of the production method 2 can be appropriately referred to, and in the following description, mainly with the production method 2. The differences will be described.
- the present production method 3 has the following steps.
- step (A) step refer to step (i) of FIG. 10, and for molds 71 and 72, refer to step (ii) of FIG. 10
- the first patch member 61 is set on the prepreg 51
- the second patch member 62 is set in the recess 73.
- the recessed portion 73 is formed by the stepped shapes 71a and 72a of the female die 71 and the male die 72, and further, the metal plate 41 held between the two stepped shapes 71a and 72a.
- the recess 73 disposed at the bottom of the molds 71 and 72 is formed on the female mold 71.
- the molds 71 and 72 are closed together. Specifically, the male mold 72 is pressed into the female mold 71, and the prepreg 51 and the metal plate 41 are formed into a predetermined shape while being in contact or bonded. At the same time, the first patch member 61 (thick portion 54) is pressed between the stepped shapes 71a and 72a, pushed into the through hole 42, and coupled with the second patch member 62.
- the molds 71 and 72 are opened, a composite structure 10 similar to that obtained by the above-mentioned production method 1 or 2 is obtained.
- another patch member is held or engaged in the metal plate 41, for example, the through hole 42 (opening 13) formed in the metal plate 41 (main body 11). It is also good.
- a counterbore is formed at the edge of the through hole 42 (the opening 13), and another patch member is locked to the counterbore before joining, or after joining.
- the counterbore may be used as a fitting portion with the head 53.
- Thick part (patch member, first patch member), 61 ... patch member, first patch member, 62 ... second patch member, 71, 72 ... pair of molds, 71 ... female mold (lower mold) , 71a: stepped shape, 72: male type (upper mold), 72a: stepped shape, 73: recessed portion.
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Abstract
Description
本発明は、日本国特許出願:特願2013-050924号(2013年 3月13日出願)に基づくものであり、同出願の全記載内容は引用をもって本書に組み込み記載されているものとする。
本発明は、繊維強化プラスティック板と金属板との複合構造体およびその製造方法に関する。
上述のような従来のこの種の製造方法においては、繊維強化プラスティック部材の成形工程と、かかる部材と金属板との接合工程とが、別個に行われていた。このため、従来のこの種の製造方法においては、製造コスト等(製造コストおよび繊維強化プラスティック部材と金属板の接合強度)の点で、まだまだ改善の余地があった。本発明は、上記に例示した事情等に鑑みてなされたものである。
(a)板厚方向に貫通する貫通孔を有する金属板と、繊維強化プラスティック板を構成するためのプリプレグと、所定形状の複合構造体を得るための一対の金型を有し前記貫通孔の一側開口部に面する位置に前記一側開口部よりも径大な凹部を形成可能な金型と、前記貫通孔に対向する位置にセットされる少なくとも一つのパッチ部材と、を用意する;
(b)前記プリプレグと前記金属板とを前記一対の金型の間に配置する;
(c)前記一対の金型を閉じ合わせ、この閉じ合わせ時、
(ca)前記プリプレグと前記金属板が接面しながら前記プリプレグおよび前記金属板が前記所定形状に成形され、
(cb)前記貫通孔内に、前記プリプレグおよび前記パッチ部材の少なくとも一方が押し出されて、前記プリプレグと一体化された軸部が形成され、及び、
(cc)前記凹部内に、少なくとも前記パッチ部材から構成され、前記軸部と一体化され、前記金属板に係止される頭部が形成される。
板厚方向に貫通して一面および他面上で開口する貫通孔を有する金属板;
前記金属板の前記一面に接合された繊維強化プラスティック製板;、
前記金属板部の前記貫通孔内に形成され、前記繊維強化プラスティック製板と一体化されたプラスティック製軸部;
前記金属板の前記他面側で前記貫通孔の開口部よりも径大に形成されて前記金属板に係止され、前記軸部と一体化されたプラスティック製頭部(係止部)。
形態3:一対の前記金型の相対移動方向に沿った内面に設けられた段差によって前記凹部が形成される。
形態4:前記繊維強化プラスティック板は前記金属板の片面に接合される。
形態5:前記繊維強化プラスティック板は連続強化繊維を含有する。
形態6:前記プリプレグとして、前記貫通孔と対向する部分に肉厚部を備えるプリプレグを用意する。前記肉厚部が前記貫通孔内に押し出されて、前記一対の金型にセットされた前記パッチ部材と結合する。
形態7:前記一対の金型に代えて前記プリプレグに、前記パッチ部材をセットする。
形態8:前記貫通孔内に、前記プリプレグと一体化された軸部が形成され、前記凹部内に、前記軸部と一体化され、前記開口部よりも径大な頭部ないし係止部が形成される。
形態11:上記(a)工程において、前記パッチ部材を、前記プリプレグ上にセットし、上記(c)工程において、前記一対の金型の閉じ合わせにより乃至それに連動して、前記貫通孔内さらに前記凹部内に前記パッチ部材が押し出されて、前記軸部および前記頭部が形成される。
形態12:上記(a)工程において、前記パッチ部材として、第1のパッチ部材を前記プリプレグ上にセットし、第2のパッチ部材を前記凹部内にセットし、上記(c)工程において、前記一対の金型の閉じ合わせにより乃至それに連動して、前記貫通孔内に、前記第1のパッチ部材が押し出されて前記第2のパッチ部材と結合し、前記軸部および前記頭部が形成される。
図1における(a)は、本実施形態の製造方法によって製造される複合構造体10の平面図であり、(b)はA-A断面図である。本実施形態においては、複合構造体10は、自動車のセンターピラー部材であって、金属板である高張力鋼板からなる本体部11と、連続炭素繊維(長繊維)を含有する炭素繊維強化プラスティック(CFRP)板からなる補強部材12と、を接合することによって形成されている。ここで、かかる複合構造体10においては、部品の軽量化を図るため、高強度が要求される長手方向中央部にのみ(図1(a)参照)、且つ、本体部11の片面側(断面視にてハット形状における内側)にのみ(図1(b)参照)、補強部材12が設けられている。
次に、上述の構成を有する複合構造体10の製造方法に用いられる金型の構造について、図4を参照しつつ説明する。なお、図4に示されているプリプレグ18は、補強部材12を構成するためのCFRP板である。
プランジャ37は、底側凸部34と同様に、開口部13の開口径よりも小径に形成された円柱状の部材であって、閉型時に開口部13に対応する位置に設けられている。そして、プランジャ37は、その先端部が、カム38及びこのカム38を駆動するシリンダ39の動作に応じて進退することで出没するようになっている。
特に、パッチ部材14は、開口部13よりも大きなサイズ(外径)で形成されている。このため、パッチ部材14の外縁部による庇状の構造により、接合後の本体部11と補強部材12との剥離を抑制するための係止部が形成される。よって、接着剤を用いなくても、本体部11と補強部材12との接合が強固に行われる。したがって、本実施形態によれば、本体部11と補強部材12との接合が、低コスト且つ良好な接合強度で行われる。
以下、代表的な変形例について、幾つか例示する。以下の変形例の説明において、上述の実施形態にて説明されているものと同様の構成及び機能を有する部分に対しては、上述の実施形態と同様の符号が用いられ得るものとする。そして、かかる部分の説明については、技術的に矛盾しない範囲内において、上述の実施形態における説明が適宜援用され得るものとする。もっとも、言うまでもなく、変形例とて、以下に列挙されたものに限定されるものではない。また、上述の実施形態の一部、及び、複数の変形例の全部又は一部が、技術的に矛盾しない範囲内において、適宜、複合的に適用され得る。
図9を参照しながら、実施形態の一つとして製造方法2を説明する。本製造方法2の説明において、前記製法方法1との共通点に関しては、適宜、前記製法方法1の説明を参照することができるものとする。本製造方法2は、下記の工程を有している。
板厚方向に貫通する貫通孔42を有する金属板41が用意される。所望の接合強度や耐衝撃性に応じて、複数の貫通孔42が金属板41に分散して形成される。
パッチ部材61(肉厚部54)と貫通孔42が対向するよう、プリプレグ51と金属板41とが、一対の金型71,72の間に配置される。雌型71に金属板41が保持され、雄型72にプリプレグ51が保持されている。
金型71,72が閉じ合わされる。詳細には、雄型72が雌型71内に押しこまれ、プリプレグ51と金属板41が接面ないし接合しながら所定形状に成形される。同時に、段付形状71a,72a間で、パッチ部材61(肉厚部54)が押圧されて、貫通孔42内に押し出され、さらに、一側開口部42aから凹部73内にはみ出す。これによって、プリプレグ51(板部、本体)と一体化された強化繊維プラスティック製の軸部52および頭部(係止部、庇部)53が形成される。頭部53は、一側開口部42aの開口径よりも径大に形成されて、金属板41の一面上に係止される。頭部53の外面は、雌型71の形状に沿って成形される。
図10を参照しながら、実施形態の一つとして製造方法3を説明する。本製造方法3の説明において、前記製法方法2との共通点に関しては、適宜、前記製法方法2の説明を参照することができるものとし、以下の説明においては、主として、前記製造方法2との相違点について説明する。本製造方法3は、下記の工程を有している。
パッチ部材として、第1のパッチ部材61(肉厚部54)をプリプレグ51上にセットし、第2のパッチ部材62を凹部73内にセットする。凹部73は、雌型71および雄型72の段付形状71a,72a、さらに、両段付形状71a,72a間で保持される金属板41によって形成されている。金型71,72の底部に配置される凹部73は、雌型71上に形成されている。
金型71,72内には、第1のパッチ部材61と第2のパッチ部材62とが貫通孔42を挟んで対向するよう、プリプレグ51、金属板41および第2のパッチ部材62が配置される。
金型71,72が閉じ合わされる。詳細には、雄型72が雌型71内に押しこまれ、プリプレグ51と金属板41が接面ないし接合しながら所定形状に成形される。同時に、段付形状71a,72a間で、第1のパッチ部材61(肉厚部54)が押圧されて、貫通孔42内に押し出され、第2のパッチ部材62と結合する。金型71,72を型開きすると、前記製造方法1又は2で得られたものと同様の複合構造体10が得られる。
Claims (13)
- 繊維強化プラスティック板と金属板との複合構造体を製造する方法であって、
所定形状の前記複合構造体を得るための一対の金型を用意し、
板厚方向に貫通する貫通孔からなる開口部を有する前記金属板を用意し、
前記開口部よりも大きなサイズでプラスティックによって形成されたパッチ部材を、一対の前記金型における一方にセットし、
前記繊維強化プラスティック板を構成するためのプリプレグと前記パッチ部材との間に前記金属板が位置するように、前記プリプレグと前記金属板とを一対の前記金型の間に配置し、
一対の前記金型を閉じ合わせるとともに、一対の前記金型における他方に設けられた押圧部材によって前記開口部の内側に対応する位置に選択的に接合用押圧力を印加し、前記開口部を介して前記プリプレグと前記パッチ部材とを結合させて、前記プリプレグと前記金属板と前記パッチ部材とを接合することで、前記所定形状に成形された前記複合構造体を得る
ことを特徴とする、複合構造体の製造方法。 - 一対の前記金型における前記一方には前記パッチ部材を収容する凹部が形成され、前記凹部は成形後の前記複合構造体を抜き取る方向に開口するように設けられたことを特徴とする、請求項1に記載の複合構造体の製造方法。
- 前記凹部は、一対の前記金型の相対移動方向に沿った内面に設けられた段差によって形成されたことを特徴とする、請求項2に記載の複合構造体の製造方法。
- 前記繊維強化プラスティック板は、前記金属板の片面に接合されることを特徴とする、請求項1~3のうちのいずれか1項に記載の複合構造体の製造方法。
- 前記繊維強化プラスティック板は連続強化繊維を含有することを特徴とする、請求項1~4のうちのいずれか1項に記載の複合構造体の製造方法。
- 前記プリプレグとして、前記貫通孔と対向する部分に肉厚部を備えるプリプレグを用意し、
前記肉厚部が前記貫通孔内に押し出されて、前記一対の金型にセットされた前記パッチ部材と結合する、
ことを特徴とする請求項1~5のうちのいずれか1項に記載の複合構造体の製造方法。 - 前記一対の金型に代えて前記プリプレグに、前記パッチ部材をセットする、ことを特徴とする請求項1~5のうちのいずれか1項に記載の複合構造体の製造方法。
- 前記貫通孔内に、前記プリプレグと一体化された軸部が形成され、
前記凹部内に、前記軸部と一体化され、前記開口部よりも径大な頭部ないし係止部が形成される、
ことを特徴とする請求項1~7のうちのいずれか1項に記載の複合構造体の製造方法。 - 繊維強化プラスティック板と金属板との複合構造体を製造する方法であって、
板厚方向に貫通する貫通孔を有する金属板と、繊維強化プラスティック板を構成するためのプリプレグと、所定形状の複合構造体を得るための一対の金型を有し前記貫通孔の一側開口部に面する位置に前記一側開口部よりも径大な凹部を形成可能な金型と、前記貫通孔に対向する位置にセットされる少なくとも一つのパッチ部材と、を用意し、
前記プリプレグと前記金属板とを前記一対の金型の間に配置し、
前記一対の金型を閉じ合わせ、この閉じ合わせ時、
前記プリプレグと前記金属板が接面しながら前記プリプレグおよび前記金属板が前記所定形状に成形され、
前記貫通孔内に、前記プリプレグおよび前記パッチ部材の少なくとも一方が押し出されて、前記プリプレグと一体化された軸部が形成され、及び、
前記凹部内に、少なくとも前記パッチ部材から構成され、前記軸部と一体化され、前記金属板に係止される頭部が形成される、
ことを特徴とする複合構造体の製造方法。 - 前記パッチ部材を前記凹部内にセットし、
前記一対の金型の閉じ合わせ時、前記貫通孔内に前記プリプレグが押し出されて前記凹部内の前記パッチ部材と結合して、前記軸部および前記頭部を形成する、
ことを特徴とする請求項9記載の複合構造体の製造方法。 - 前記パッチ部材を、前記プリプレグ上にセットし、
前記一対の金型の閉じ合わせ時、前記貫通孔内さらに前記凹部内に前記パッチ部材が押し出されて、前記軸部および前記頭部を形成する、
ことを特徴とする請求項9記載の複合構造体の製造方法。 - 前記パッチ部材として、第1のパッチ部材を前記プリプレグ上にセットし、第2のパッチ部材を前記凹部内にセットし、
前記一対の金型の閉じ合わせ時、前記貫通孔内に、前記第1のパッチ部材が押し出されて前記第2のパッチ部材と結合して、前記軸部および前記頭部を形成する、
ことを特徴とする請求項9記載の複合構造体の製造方法。 - 板厚方向に貫通して一面および他面上で開口する貫通孔を有する金属板と、
前記金属板の一面に接合された繊維強化プラスティック製板と、
前記貫通孔内に形成され、前記繊維強化プラスティック製板と一体化されたプラスティック製軸部と、
前記金属板の前記他面側で前記貫通孔の開口部よりも径大に形成されて前記金属板に係止され、前記軸部と一体化されたプラスティック製頭部と、
を備える、ことを特徴とする繊維強化プラスティック板と金属板との複合構造体。
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2014
- 2014-03-12 CA CA2905266A patent/CA2905266C/en not_active Expired - Fee Related
- 2014-03-12 CN CN201480013796.2A patent/CN105073389B/zh not_active Expired - Fee Related
- 2014-03-12 US US14/776,005 patent/US10232560B2/en not_active Expired - Fee Related
- 2014-03-12 WO PCT/JP2014/056542 patent/WO2014142189A1/ja active Application Filing
- 2014-03-12 EP EP14764186.4A patent/EP2974849B1/en not_active Not-in-force
- 2014-03-12 JP JP2015505524A patent/JP6076462B2/ja not_active Expired - Fee Related
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US10899046B2 (en) | 2015-06-17 | 2021-01-26 | Nissan Motor Co., Ltd. | Composite member |
JPWO2016203576A1 (ja) * | 2015-06-17 | 2018-03-08 | 日産自動車株式会社 | 複合部材 |
EP3311990A4 (en) * | 2015-06-17 | 2018-08-15 | Nissan Motor Co., Ltd. | Composite member |
CN107708977A (zh) * | 2015-06-17 | 2018-02-16 | 日产自动车株式会社 | 复合构件 |
JP2018103510A (ja) * | 2016-12-27 | 2018-07-05 | 富山県 | 繊維強化樹脂材と金属材との接合構造及びその接合方法 |
JPWO2019234804A1 (ja) * | 2018-06-05 | 2021-08-19 | 日産自動車株式会社 | 車体構造及び車体の製造方法 |
WO2019234804A1 (ja) * | 2018-06-05 | 2019-12-12 | 日産自動車株式会社 | 車体構造及び車体の製造方法 |
JP7031742B2 (ja) | 2018-06-05 | 2022-03-08 | 日産自動車株式会社 | 車体構造及び車体の製造方法 |
US11427261B2 (en) | 2018-06-05 | 2022-08-30 | Nissan Motor Co., Ltd. | Vehicle body structure and method for manufacturing vehicle body |
WO2020003382A1 (ja) * | 2018-06-26 | 2020-01-02 | 日産自動車株式会社 | 複合体 |
JPWO2020003382A1 (ja) * | 2018-06-26 | 2021-06-10 | 日産自動車株式会社 | 複合体 |
JP7043034B2 (ja) | 2018-06-26 | 2022-03-29 | 日産自動車株式会社 | 複合体 |
US11697233B2 (en) | 2018-06-26 | 2023-07-11 | Nissan Motor Co., Ltd. | Composite |
WO2022014869A1 (ko) * | 2020-07-15 | 2022-01-20 | 이이엘씨이이주식회사 | 3차원 구조체와 이의 제조 방법 |
KR20220009166A (ko) * | 2020-07-15 | 2022-01-24 | 이이엘씨이이주식회사 | 3차원 구조체와 이의 제조 방법 |
KR102398676B1 (ko) * | 2020-07-15 | 2022-05-17 | 이이엘씨이이주식회사 | 3차원 구조체와 이의 제조 방법 |
DE102023116573A1 (de) | 2022-07-01 | 2024-01-04 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Metall- harz-verbundgegenstand und verfahren und vorrichtung zu dessen herstellung |
Also Published As
Publication number | Publication date |
---|---|
EP2974849A1 (en) | 2016-01-20 |
EP2974849A4 (en) | 2016-12-07 |
US10232560B2 (en) | 2019-03-19 |
JPWO2014142189A1 (ja) | 2017-02-16 |
CN105073389A (zh) | 2015-11-18 |
CN105073389B (zh) | 2018-04-03 |
EP2974849B1 (en) | 2018-07-04 |
US20160016359A1 (en) | 2016-01-21 |
JP6076462B2 (ja) | 2017-02-08 |
CA2905266A1 (en) | 2014-09-18 |
CA2905266C (en) | 2019-09-24 |
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